摘要
通过工程方程求解器Engineering Equation Solver(EES)开发了一个新的卧式壳管式冷凝器稳态模型。对管束外的传热系数计算公式进行了修正,使其更加适用于R404A。经实验验证,水出口温度和制冷剂出口温度计算值与实验值的绝对误差分别在0.1℃和3℃以内。通过仿真的方法研究了冷却水流速和温度对卧式壳管式冷凝器换热性能的影响,制冷剂的进口温度、进口压力以及质量流量对换热性能的影响以及制冷剂温度和冷却水温度对换热性能的综合影响。
A new steady-state model of a horizontal shell-and-tube condenser was developed through Engineering Equation Solver(EES).The formula for calculating the coefficient of heat transfer of the outer surface of the tube bundle was modified to make it more suitable for R404A.It is verified by experiments that the absolute errors between the calculated values and experimental values of the water outlet temperature and the refrigerant outlet temperature are within 0.1℃and 1.3℃respectively.The effects of cooling water flow rate and temperature on the heat transfer performance of horizontal shell-and-tube condensers,the effects of refrigerant inlet temperature,inlet pressure and mass flow rate on heat transfer performance and the comprehensive influence of refrigerant temperature and cooling water temperature on heat transfer performance are studied by siumaltion method.
作者
王启天
孙晓琳
谈向东
Wang Qitian;Sun Xiaolin;Tan Xiangdong(College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China)
出处
《低温工程》
CAS
CSCD
北大核心
2020年第3期61-68,共8页
Cryogenics
关键词
卧式壳管式冷凝器
稳态模型
传热系数
R404A
horizontal shell-and-tube condenser
steady-state model
coefficient of heat transfer
R404A
